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by DougBTX 5991 days ago
Not all languages, but many: http://en.wikipedia.org/wiki/Turing_completeness#Examples
1 comments

From that wikipedia page: "The untyped lambda calculus is Turing-complete, but many typed lambda calculi, including System F, are not."

Anyone have any details about System F not being turing complete? Is it not straightfoward to implement an untyped lambda calculus in a typed one?